SEE IT: Jon Stewart and Stephen Colbert reunite for GOP coverage

In a highly anticipated on-camera reunion, late night comedy greats Stephen Colbert and Jon Stewart teamed up to take on the Republican National Convention.

To help make sense of the zaniness of this year’s election season, “The Late Show” host paid a visit to the former “Daily Show” anchor, who was hidden off the grid in a cabin, sporting a fierce retirement beard.

From his wooded outpost, Stewart hadn’t been following politics — so the duo’s reunion skit followed Colbert’s hilarious efforts to break the news to the former Comedy Central host.

Stewart was pretty patently not interested in politics anymore — until he heard that Trump is large and in charge this year.

“The guy whose eyes look like tiny versions of his mouth?” he asked in disbelief.

“Yes, the guy who looks like an angry Creamsicle,” Colbert confirmed.

Stephen Colbert and Jon Stewart reunited on screen Monday night.

(YouTube)

“Decomposing jack-o’-lantern?” Stewart replied. They went back and forth and by the end of the segment, they’d teamed up behind a “Captain America” shield.

Monday’s show also featured a return of Colbert’s arch-conservative “Colbert Report” persona — and his famous Bill O’Reilly parody segment, called “The Word.”

The six-minute slot explored the word “Trumpiness.”

“A lot of people are wondering how America — God’s girlfriend — ended up in a relationship with this guy,” he said, gesturing to the presumptive nominee.

The show opened with a song and dance number called “Christmas in July” — which is just what political conventions are for late night comics.

“This week, you and me, we will witness history as the RNC crowns their orange manatee,” Colbert sang, decked out in a patriotic vest and chock-full of hilarious and bizarre lyrics.

Colbert offered a fabulous preview of the show Sunday when he crashed the Cleveland convention stage wearing a blue wig for a “Hunger Games”-style speech.

“He has formed an alliance with Indiana Governor Mike Pence,” he said of the billionaire politician. “Sorry, I blacked out there for a moment. So it is my honor to hereby launch and begin the 2016 Republican National Hungry for Power Games!”

The faux-conservative was escorted off stage, apparently by a security guard.

“Look, I know I’m not supposed to be up here, but let’s be honest, neither is Donald Trump,” he said as he exited the stage.

Back in June, “The Late Show” announced its plans for two weeks of live broadcasts during the Republican and Democratic convention — so there’s plenty more side-splitting convention coverage ahead.